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Blue Screen/Not recognizing Hard Drive Virus

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The other day my computer shut down and after booting it back up I am getting a blue screen after the windows loading screen that says "Fatal System Error, could not connect to the logon server." I knew I had a virus and I should have seen this coming.

Well so far I have tried booting up with safe mode, disabling all the optical drives and booting with safe mode with networking. Neither work and still take me to the blue screen. Then I tried putting in my windows disk and hitting enter to reinstall windows but I get a message saying I have no hard drive installed. I tried making a bootable floppy drive and put Fdisk on it in hopes of reformatting but I get the message "invalid disk, not a system disk. Please replace and hit a key."

I have not moved my computer around or anything and know that my hard drive is connected.

After reading around on this issue the common problem is GoBack and a windows hotfix. Neither apply to me.

I have no problem with reformatting my hard drive but I cannot seem to get to that step if I wanted to.

Does anyone have any ideas on how to fix this?
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    motto - Just get-er-done

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You are probably getting a oXoooooo7B error.


Windows lost access to the system partition or boot volume during the startup process. Typical causes: Installing incorrect device drivers when installing or upgrading storage adapter hardware, or a virus.

* Stop 0x7B or “0x4,0,0,0” Error {KB 122926} Win NT, Win XP (on restart)
* During setup (Sysprep issue) {KB 303786} Win XP
* When You Press F6 to Load Drivers During Unattended Win XP Setup {KB 307099} Win XP
* When you restart your Win XP-based computer {KB 316401} Win XP (after replacing motherboard)
* When you start your computer from a WinPE CD-ROM or from a Server 2003 CD-ROM using a USB CD-ROM device {KB 839210} Win XP, Win Server 2003 (patch available)
* Limited OEM driver support is available with F6 during Win XP & Server 2003 setup {KB 314859} Win XP, Win Server 2003

Beyond these answers is a replacement of the HD. If you have a boot sector virus its almost impossible to remove. What i do then is use the drive makers utilities to write zero's to the drive and start over again. I will use my test mule computer and slave the drive into it.

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