Question

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Random Computer Shutdowns

By kfrost ·
I have a computer that will just reboot itself while a user is working. I went into the Event Viewer and saw this error under System.

The following boot-start or system-start drive(s) failed to load:
lydmmyza

I'm running XP pro SP3.

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All Answers

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Try replacing the Power Supply

by OH Smeg In reply to Random Computer Shutdowns

With a Known Good Unit and see if this problem persists.

Col

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Might be heat related

by kelruze In reply to Random Computer Shutdowns

If the computer gets too hot it will shutdown to prevent system damage with no warnings or errors, Make sure the fans are all working in the Case and the heatsink is securely connected to the processor. Also you can try to download SpeedFan(just google it) it will tell you how hot the PC is running.

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I would also

by IC-IT In reply to Random Computer Shutdowns

scan that system for trojans, etc. The lydmmyza doesn't sound kosher.
Autoruns will also help identify rogue start-up items.

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Trojans and other Spyware

by kfrost In reply to I would also

This computer did have some Trojans and other spyware a few weeks ago. Afterwards this is when this issue started happening. I was able to clean the computer of everything that was infected. I also disabled everything from running is MSCONFIG except for my virus protection (AVG 8.0 Full Version). I will take a look at the other suggested solutions and post my findings later. Thank you for the help.

-Kevin

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Well in that case

by OH Smeg In reply to Trojans and other Spyware

Hit the system with a scan of Malwarebytes

http://www.download.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html?tag=mncol&cdlPid=10997763
Download the above app install Update and then restart in Safe Mode not Safe Mode with Networking and scan the entire system with AVG and Malware bytes till it's clean.

Also try creating a new User Account and logging in with that as well. If the problem persists use a Live Linux to rule out any Hardware issues. These run off a CD and have no effect on the installed OS unless you chose to install it.

You can get a Live Linux from here

http://www.frozentech.com/content/livecd.php

Or go to your Local Newsagent and buy a Linux Mag with a Live Linux on the Cover Disc.

Col

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You could still have an infection

by Jacky Howe In reply to Random Computer Shutdowns

To rule out Hardware try booting with a Knoppix or Linux CD.

Follow the steps below with the System started and restarted in Safe Mode with Networking.

Removing malware from System Restore points
To remove the malware, you must first disable System Restore, then scan the system with up-to-date antivirus software - allowing it to clean, delete, or quarantine any viruses found. After the system has been disinfected, you may then re-enable System Restore. The steps for disabling System Restore vary, depending on whether the default Start Menu or the Classic Start Menu is being used.

Default Start Menu XP
If using the default Start Menu, click Start | Control Panel | Performance and Maintenance | System. Select the System Restore tab and check "Turn off System Restore".

Classic Start Menu XP
If using the Classic Start Menu, click Start | Settings | Control Panel and double-click the System icon. Select the System Restore tab and check "Turn off System Restore".

Vista
Start, right mouse click Computer and select Properties. Select Advanced System Properties, click contine and then System Protection. Untick the box nect to Local Disk C: and click on Turn System Restore off.


After scanning the system and removing the offending malware, re-enable System Restore by repeating the steps, this time removing the check from "Turn off System Restore".

Click Start, Run type msconfig and press Enter.

Now if you have the Configuration Utility open.
Configure selective startup options
In the System Configuration Utility dialog box, click the General tab, and then click Selective Startup.
Click to clear the Process SYSTEM.INI File check box.
Click to clear the Process WIN.INI File check box.
Click to clear the Load Startup Items check box. Verify that Load System Services and Use Original BOOT.INI are checked.
Click the Services tab.
Click to select the Hide All Microsoft Services check box.
Click Disable All, and then click OK.
When you are prompted, save the settings and restart the PC.
When the System is disinfected re-run the Configuration Utility and in the System Configuration Utility dialog box, click the General tab, and then click Normal Startup.

Download Malwarebytes Anti-Malware, install it and update it.

Click this link<a href="http://download.bleepingcomputer.com/malwarebytes/mbam-setup.exe" target="_blank"><u>malwarebytes</u></a>


* Double-click mbam-setup.exe and follow the prompts to install the program.
* At the end, be sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
* If an update is found, it will download and install the latest version.
* Once the program has loaded, select Perform Quick Scan, then click Scan.
* When the scan is complete, click OK, then Show Results to view the results.
* Be sure that everything is checked, and click Remove Selected.

I would keep scanning with it until it is clean by closing out and rebooting and running it again.

Just to be on the safe side when you finish do an online scan with Bitdefender. Or Google for an online scanner.

Click this link <a href="http://www.bitdefender.com/scan8/ie.html" target="_blank"><u>bitdefender</u></a>

If you can't access the internet to update MBAM try the instructions below to clear a path to the internet to be able to run MBAM.

From another PC download and install Spybot, update it and copy the the installed folders to a USB Stick.

Restart the PC in Safe Mode, navigate to the USB stick and run Spybot.

Download Spybot - Search & Destroy and install it. Update it. http://www.safer-networking.org/en/download/index.html

With the new strains of Virus that have been created you may find it necessary to rename the executable files so that they will work. Rename mbam-setup.exe and then navigate to the install folder and rename mbam.exe. Do not change the files extension from .exe. Do the same with Spybot.

Also run this Rootkit Revealer GMer

Click this <a href="http://www.gmer.net/index.php" target="_blank"><u>gmer</u></a>

FAQ

Click this <a href="http://www.gmer.net/faq.php" target="_blank"><u>link</u></a>

BleepingComputer
Click this <a href="http://www.bleepingcomputer.com/malware-removal/" target="_blank"><u>bleepingcomputer</u></a>

Update your Antivirus software.
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