ACER M5640 0x0000007b BSOD Error

Date Fixed : 03.28.10

Owner : Fritz

Processor : Intel E2460 Dual Core 2.4 Ghz

Motherboard : ACER M5640

Memory : 1 GB

Hard Disk Drive : WD SATA 160 GB

Technician : Drokz

URL : http://tirabyte.blogspot.com

PROBLEM :

Upon intallation attempt, a BSOD 0x0000007b error appears as ; HDD could not be detected

CLIENT REQUESTS:

Data Backup

Antivirus Installation

INTERVENING FACTORS:

ACER M5640 Motherboard Support CD lost

OBSERVATION :

-Everything seems ok upon turning on the computer. So I proceeded with the O.S. Installation.

-Before trying to install an Operating System, I visited ACER's site to see if there are available

drivers for the motherboard model (M5640) and downloaded it. I found out that the drivers were for either win 7 or win vista only, so I asked Sir Fritz which O.S. am I to install and he agreed to stick to Win Vista but should try to setup XP if it is possible to use the said available drivers..

-So the Win XP installer was inserted in the optical drive and retarted the System Unit, and accessed BIOS environment after POST to re-order the boot sequence. The CD-ROM or DVD ROM should be the first boot priority.

-On the course of the XP Setup specifically on the disk partitioning part, the BSOD appears with the error 0x0000007b. I suspected that the RAM was defective so I checked it for defect but found it running just fine. So I then suspected another thing that caused the BSOD error ... the SATA Driver Controller perhaps.

-So I copied the RAID Driver ( for VISTA ) in a floppy drive and followed the XP installation instruction to press F6 upon loading third party drive controller and so on...

-But then... Win XP still doesn't continue to install.

-So i swithced to installing VISTA instead.

-On some point of the Vista Setup, it seeks for a Drive Controller. So I rushed to see the RAID Driver downloaded earlier and copied it to my stick drive. As I browsed for the RAID controller driver to be used for the installation, I copied the RAID files into a stickdrive and plugged it to the ACER M5640 but upon browsing for the RAID driver, VISTA wont continue to install. I began to get worried of such problem.

-Why can't VISTA find the RAID Driver in a USB Stickdrive where boot from USB was enabled in the BIOS. I then looked at the motherboard and surprised to see a floppy drive header! So I used the diskette copied earlier with the RAID driver on the XP installation attempt. A floppy drive was installed and restarted the VISTA installation.

-And when VISTA tried to search for the RAID driver, the diskette (copied with RAID Driver) was inserted and then browsed for the file associated with the drive controller. And yes indeed! The diskette worked and the VISTA Installation continued. The floppy drive seemed to be the answer for all the confusion.

- After a successful VISTA Installation, the ACER M5640 drivers were loaded but it seemed that the Coprocessor, Ethernet Controller and SM Bus Controller could not be installed. So I googled then found out that it must be installed with an Nvidia Chipset Update Driver. And after downloading and run the Nvidia chipset Update Driver then restarted the system, the Coprocessor, SM Bus Controller, and the Ethernet Controller no longer had a yellow exclamation point in the Device Manager.

-MS Office 2007 was then installed then a Kaspersky Antivirus.

-Backup files were then scanned for virus infection and copied back to the ACER M5640 hard drive.

REPORT:

- ACER M5640 System Model needs a RAID driver to install VISTA using a Floppy Drive to resolve the 0x0000007b BSOD Error.

- ACER M5640 needs an Nvidia Chipset Update Driver to install the Coprocessor, SM Bus Controller, and Ethernet Controller.

An IBM 6790KBM Computer Constantly Restarts on Boot

An IBM 6790KBM computer restarts after showing the Win XP bootscreen and also briefly shows the memory dump error or commonly called the Blue Screen of Death or the BSOD. It was handed to us but the system unit was already been tried to be fixed by another technician. We then asked the computer technician on what problems did he encounter and the fixes he has done. The computer technician said that he was suspecting the following components to be defective and has taken some actions or fixes.

a. RAM or its DIMM Slots

- He checked each of the RAMs in binary method. One RAM after the other tried on each DIMM slot.

b. Video Card

- The Video Card has also been suspected because it shows trashy video sometimes.

c. Motherboard

- The Computer technician said that he checked and tested the RAMs and the Video Card on another system and were just working fine. So he suspected that the motherboard is failing.

d. The Processor???

- Yup, he suspected the processor. That could be quite impossible considering that the computer has display and bios configuration could be accessed. What must he be thinking then.

e. The Power Supply Unit (PSU)

- I asked the technician earlier before I accepted this job that did he check the power supply. He said no, because everything seems fine and working.

Those were the Computer Technician's suspicion and I need to check it myself rather than resting my computer troubleshooting skills on his observations.

Date Fixed : August 27, 2010

Problem : IBM 6790-KBM computer will restart after showing the win xp boot screen and briefly stalls showing the memory dump error or the Blue Screen of Death or BSOD then restarts.

Owner : I dont know. The Computer Technician handed it to me.

Motherboard : IBM 6790KBM 1.5 Ghz Processor

Operating System : Win XP SP 2

Technician : Drokz

URLs: computer-help-tips.blogspot.com clhidohardware.blogspot.com

INTERVENING FACTORS

- Computer needs to be fixed in a day

OBSERVATIONS

- Intermittent restarts on boot up attempt

- Has power, has video, shows POST, boot attempts then crashes and restarts.

TROUBLESHOOTING PROCEDURES

***** please turn off the avr and unplugged the power cord if you'll replace and test any peripheral in a system *****

- Since it has display and shows the POST, we should check the RAMs if they are working right. To do this, disconnect all the data cables, the power connectors to the drive and the peripheral cards.

- The computer is installed with two RAMs so we need to check each RAM on every DIMM slot. After swapping each of the RAMs on the DIMM slots, we found out that DIMM slot 1 and the other RAM is defective. How was it determined? On POST. The Computer boots up so slow when the other RAM is inserted. And also if the good RAM is inserted in DIMM slot 1, it stalls the computer on POST. Use the binary method in testing the RAM.

- We already determined that one of the RAMs and DIMM slot 1 are defective and been eliminated (RAM removed, DIMM slot unused), it did not solve the problem at all. So its time to check the disconnected peripheral if which is failing. So we started checking with the hard drive.

- We connected the Hard Disk Drive and tried booting up the system. It looked good at first because the POST was relatively faster. But on XP's boot up screen, it still stalled and briefly show BSOD then restarted. We then assumed that this could be an OS problem but I suggested that the PSU must be checked.

- So we opened the PSU and found no physical evidence of defective components. But our suspicion on the PSU still persisted so we tried another good PSU and the system booted up successfully! We finally got the system running well. The tested good PSU was rated at 400 W, could it be that the older PSU can't fully sustain the power that the IBM consumes? The system is now running fine after some RAM , cable and connector checks.

SUMMARY :

- The IBM 6790KBM computer had a failing DIMM slot 1 and one of the RAMs is found to be defective. But removing the defective RAM and leaving the DIMM slot 1 unused didn't solve the problem but significantly made the computer run better.

- The PSU was then founded out to cause the boot-restart problem. This intermittent and stubborn problem was caused by the Power Supply Unit and has been replaced. The system is now up and running fine.

Problem : Virus Infected, ROM Drives not recognized

Computers with boot problem or operating system corruption due to virus infection can be resolved by running an antivirus or antimalware program to remove the virus infection then run a registry cleaner to roll back changes the virus has made. Boot problems can somehow also be attributed by a hardware failure like defective or failing hard drive, RAM, power supply unit or PSU, or the motherboard itself. To be able to fix such problem, one has to consider checking the most obvious and easier suspected troubles like programs than to that of the hardware. Safety and efficiency while troubleshooting a computer should be considered as well.


Date Repaired : October 21, 2009


Problem : Computer Virus Infected, CD ROM is recognized as DVD ROM in My Computer


Owner: Ms. Melchie Dorado, Dumaguete City


Motherboard : ECS Pentium IV 2.8 Ghz
Operating System : Windows XP SP2


INTERVENING FACTORS:

- Motherboard Support CD is lost


OBSERVATION:

- CD ROM wrongly recognized in My Computer
- Computer boots up so slow
- Task Manager has been disabled, likewise the folder view and Run
- Webcam won't work
- Computer restricts installation of an antivirus
- Cannot perform file backup, USB flashdrive is rejected to be recognized.


TROUBLESHOOTING PROCEDURE:

* Learn more about computer troubleshooting safety and safety do and no list before doing any fixes on your computer!

- Since we cannot install an antivirus and perform file backup because of the restrictions made, it is best to backup the drivers first then perform operating system re-installation but without formatting. We can do driver backup using double driver or driver backup pro.

- After successfully having backup of the drivers (which are of course virus infected but later be scanned), reinstall the operating system and choose not the format the partition.

- After successfully reinstalled the operating system without formatting, having file backup is now possible because the changes made by the virus has been removed through the re-installation of the operating system and renewing of the registry. After the file backup has been made, the final re-installation of the operating system with partition formatting now begins.

- Do operating system installation. While we waited for the os installation to finish, I had my file backup and the driver backup scanned with an updated antivirus from another working computer. * learn more about proper operating system installation guide

- As the operating system installation has been successful, the device drivers were installed and the backup was also restored back to the appropriate directory. Additional drivers were installed using a drivers pack for the webcam and the printer. * Learn more about device driver solution

- After installing the device drivers for the motherboard, we then tweaked the registry and performed disk cleanup. Basic programs were then installed like microsoft office 2003, adobe reader, vlc, flash, and many other programs.

- Additionally, utilities were also installed like teracopy, winrar, USB guard, regcure and smart defrag. Theses utilities will help the system run better and adds more style and functionality experience of the user.

- Smart defrag was launched to perform disk defragmentation and then later regcure to fix registry issues. These two programs were run to make files compressed and continuous and also make the registry run the system unit as a whole better. * Learn more about registry fixing

- An antivirus was installed and been updated as well.

- Computer was restarted and checked all the previously observed problems have already been resolved. The system is now ok.


SUMMARY

- Computer boot problems are generally attributed by computer virus attacks. The best way to keep your computer safe is to at least install an antivirus and if possible a good firewall. Boot problems occur when a virus attacks primarily the registry and boot files thus making the operating corrupted and useless.

NTLDR Missing NEC LL550 / G

Date Fixed : 05.04.10

Owner: Ms. Jamora

Unit: NEC LL550 / G Laptop

Operating System : Win XP SP 3

Technician: Drokz

URL : http://computer-help-tips.blogspot.com

PROBLEM :

Upon Boot Up, NTLDR Missing Error appears

CLIENT REQUEST :

File Backup and if possible just to fix the NTLDR problem and retain the settings.

INTERVENING FACTORS:

Support CD is lost

Upon checking the drivers on an NEC site, the site redirects to 121ware.com and it is a Japanese site. Since I can't find the drivers for the NEC LL550 / G Laptop at 121ware.com

OBSERVATION:

Upon turning on the system, it just displays "NTLDR Missing".

Going to Safe Mode ( Pressing f8 on startup ) on startup doesn't help either. "NTLDR Missing" Error still appears.

TROUBLESHOOTING PROCEDURE :

- Fixing NTLDR Missing error can simply be corrected using some 3rd party programs. But in some cases, it might not work. I have known 2 programs that can fix this problem, one if Spotmau and the other is ERD Commander. So I first used Spotmau to try do the trick.

- I loaded in the Spotmau boot cd and waited until the Spotmau environment appeared. And on the Spotmau console, the was an option to fix the system. I opt to roll back the good state of the Operating System but it failed. So I decided to use ERD Commander.

- Upon booting up using the ERD Commander, I tried an option to fix the system. And after awhile upon finishing the fix, the system was booted up on Hard Drive ( cd was removed ) and still the NTLDR Missing Error Still persists. So I finally decided to replace the NTLDR Files using the Win XP Installer.

- To fix the NTLDR files, the files should be replaced. In order to replace or fix the NTLDR files, we need to load in our Win XP SP2 and boot it up ( restart the system )

- You should see after awhile some options to what you should be doing in the set up. Now, I chose "Repair". A minute after, you should be prompted to choose the OS and to supply the administrator password for that installed Operating System. Then, the command line now appears. In the command line, type in "copy e:\i386\ntldr c:" then afterwards copy another file and type in "copy e:\i386\ntdetect.com c:" ( please do not include the quotation and e: should be replaced by the drive letter of your cd rom drive or dvd rom drive ). Please remember that wherever you installed your Operating system ( aside from the default partition which is c: ), copy the ntdetect.com and ntldr files to drive c:. :-) I tried copying the files to drive d: where I installed the Operating System and it DIDN't WORKED.

- After copying ntdetect.com and ntldr from the I386 folder of the XP Installer and booted up the system, everything went running well and the NTLDR Missing problem now resolved.

SUMMARY:

- Using Spotmau or ERD Commander does not always guarantee to fix NTLDR Missing problems. Sometimes, we need to manually do it by copying the ntdetect.com and NTLDR files from the I386 folder of the Win Xp Installer. This can only be achieved in the "Repair" mode of the Win XP Setup environment using command the command line.

- Somehow using Spotmau or ERD Commander makes your job quicker and there are a lot more options to do only Spotmau and ERD Commander can do like System Rollback, File Backup, Driver Backup, and many many other useful tools to play with. :-) You can also try and purchase this guidebook through Amazon to do disk defragmentation, file and system recovery, administrative tasks, and using third party programs effectively.

NTLDR Missing | Virus Infected | Backup Needed

Owner: Ms. Jaqueline
Address: El Amigo, Silliman University Area, Dumaguete City

Processor: Intel Dual Core 2.8 GHz
Memory: 512 MB DDR2
Motherboard: D945GLF (Intel Motherboard)
Operating System: Win XP SP2
Hard Disk Drive Size: 160 GB

Technician: Rogin Diez


PROBLEM

- "NTLDR Missing" text appears upon bootup
- Virus Infected


CLIENT REQUEST

- File and multimedia backup


INTERVENING FACTORS

- Motherboard support CD lost
- Peripheral drivers lost


OBSERVATIONS

- Power OK
- Unable to boot up, "NTLDR missing" code appears


TROUBLESHOOTING PROCEDURE

- Re-installation of Win XP without formatting the drives

- After successful istallation of the OS, backup requested files (Documents, Pictures, MP3's, etc..)

- Run DXDIAG by going to "Run" of the Start Menu (WIN+R) then type dxdiag,look for the motherboard description, the motherboard manufacturer for driver download reference.

- After determining the motherboard and file backup, install back the OS and I partitioned the drive twice with 50% each of the total drive space.

- After successfully installed the operating system, I then installed additional application like MS Office 03 and 07, an antivirus, USB Security, USB Safely Remove, Teracopy, Regcure, VLC, Firefox, etc..)

- Download the missing drivers from the web.

- The downloaded motherboard drivers are then installed.

- System restart was necessary then.

- After the restart, defrag the drives then assign larger virtual memory for both drives C: and D:

- Restart, then run Regcure.


REPORT

- The system was then functioning well. Computer Troubleshooting do require patience in the procedure. And careful understanding of the functions of the peripherals is a must. 0_o

Computer Boots Up and brings to the Welcome Screen and Freezes

Date Fixed : 04.10.10

Owner : Ms. Elain Rebutante

Processor : Intel 1.8 GHZ PGA

Motherboard : ECS P4-M800

Memory : 256 GB

Hard Disk Drive : Maxtor IDE 80 GB

Operating System : Win XP Sp 2

Technician : Drokz

URL : http://computer-help-tips.blogspot.com

PROBLEM :

Boots up, then freezes at Windows Xp Welcome Screen. No keyboard response. System can only be shutdown by holding the power button for few seconds.

CLIENT REQUESTS:

Data Backup

Antivirus Installation

DVD RAM Installation

INTERVENING FACTORS:

ECS P4m800 Driver lost.

Possibly Defective Hard Disk ( Clicking sound in the hard drive when the system is turned on )

OBSERVATION :

- Upon turning on the system, the clicking sound of the hard disk is clearly audible. With that unusual sound, any technician can directly point out that it might be defective or most probably be causing the problem.

- As the system starts to show the Windows Welcome Screen, the system freezes and locks the keyboard.

TROUBLESHOOTING PROCEDURE

- First, we need to check if the hard disk is the peripheral that is failing. It is quite obvious that the internal clicking sound indicates a mechanical inconsistency. So I removed the hard disk and restarted the system (computer) to see if the error is really related to that of the hard drive or might be the other failing failing peripherals.

- But upon restarting, the system stalled on POST. The hard disk might not be the cause of the problem.

- So I opened the side cover of the system unit and check for blown or leaking capacitors on the motherboard because these capacitors when they malfunction gives the same problem as observed - system stalling or not no booting up at all. But as I have checked on the mobo, there seemed to be no blown or leaky capacitors. So I decided to check the other peripheral that has capacitors in it - the Power Supply Unit.

- I then removed the Power Supply from the system case. And as I opened the Power Supply Unit, I saw 3 blown capacitors! The Power Supply is practically to be replaced. It is not advisable to replace the capacitors in the Power Supply Unit for it might contribute a chain of troubles to the rest of the components of your computer including primarily your motherboard, hard disk, and your precious CPU.

- An hour after, the requested power supply arrived. After installing the new power supply, the system was turned on and it did not stall at all. It continued the Power on Self Test (POST) and seeks for a bootable disk! At last we found the culprit. I then will try to check the Hard Disk if it is still functional.

- The hard disk drive was then installed back and restarted the system unit. Not a surprise to me, there was an error indicating a disk scan or a scheduled check disk. The hard drive needs to be restored, this might be due to the defective power supply, it already affected the hard disk and should not be long enough be replaced immediately.

-So I turned off the system, installed her new DVD RAM and then run the XP SP2 cd to restore the installed XP Operating System of her computer. ( Restoring the XP OS in not yet covered in tis tutorial - you may ask for information thru commenting here and you will get your answers via email - we will discuss your problem in this blog so others may learn also. :-] )

- After the Operating System restoration, the system works just as fine but I recommended Ms. Elain to buy a new hard disk for her computer. The hard disk will fail any sooner.

REPORT:

- Stalling / Freezing on Welcome screen or on Power on Self Test (POST) was contributed by the defective power supply unit - which in the case of Ms. Elain's Computer, it was replaced.

- A defective Power Supply corrupts an Operating System ( Win XP ) , and even worse your Hard Disk Drive.

Virus Infected | Corrupted O.S.

Computer Owner: DILG
Unit: Full Tower ATX
Computer Description: Intel ® D850MV Chipset
Processor: Intel ® Pentium 4
RAM: 128 Mb (SDRAM)
Operating System: Windows SP 2


Technicians:

Mr. Ronald Suan 09269514596
Mr. Wilson Balbuena 09265150058



Observation:

>”Re-install a copy of the above file (Window root) system32\hall.dll” error report occurs upon bootstrapping.


Troubleshooting Proper:

>Re-installing Operating System (Windows Xp SP 2) without formatting the drives.

>Backup important files (word, excel, power point and other important documents, pictures, video, and others) and save it in a pen drive or other removable external media.

>Re-installing of OS (Windows XP SP 2) and formatting the drives as well as creating of disk partitions {C: and D: where the OS was installed in drive D}

>Applying disk defragmentation for both drives.

>Adding virtual memory and setting up a restoration point.

>Installing of system drivers (audio, video and LAN drivers, printer, Ethernet controllers, etc..)

>Installing of application programs and windows utilities (Windows Office 2003 and 2007, winamp, k-lite codec pack, gom player, adobe reader and others).

>Scanning the flashdrive that contains the backup files in other computer with updated and strong virus removal.

>Copying the backup files back to the freshly installed OS computer.



Trouble(s) Found / Computer Defect:

>OS Corrupted

>Infected with computer viruses namely; Trojan and Worm Agents {found during scanning of the flashdrive for virus removal}


Remedy:

>Re-installation of OS (Windows XP SP 2) and formatting the drives.

Summary:

>The computer was infected with viruses, namely Trojan and Worm Agents which causes the corruption of the Operating System. This is the main reason why the computer cannot boot up properly. In order to solve this problem, re-installation of the operating system without formatting was done in order to have a fresh copy of the operating system file and the virus to temporarily be inactive so we can backup. After the backup process, we re-installed the OS with formatting and now, the computer is functioning well and ready for operation.


Keywords : Virus Infected Corrupted O.S. (Operating System)