Computer Won't Boot Past Blinking Underscore

Feb 8, 2005

I was working on my friend's computer and I had to switch the hard drive over to his new computer to try and get it to work on the new computer. It didn't work, so I tried to put the harddrive back in its original computer and now I have a problem. When I try to start up the computer, everything runs fine through the POST and then, before it goes to the Windows screen with the little bar that goes sideways, it stops on a black screen with the blinking underscore (_). I've restarted it many many times and it all ends up the same, stopping at the flashing underscore. I've tried to boot to a Win 98 boot floppy to get it to the command prompt but I get an error saying that it is the incorrect disk. I've also tried to reset the bios by taking the battery out for a while. It reset the bios good and all but I still got the same problem. I think it has to do with the MBR cause I know the harddrive works (as a slave in another computer) and I know the RAM is new. I don't think those are the problems because before I put the harddrive in the new computer to try and boot off it, it worked fine. I can't get into the start up menu either by pressing F8. The only thing I can think of that might work that I haven't tried is to boot off the XP cd and do the recovery console thing. Unless I know that it will abosolutely fix it, I'd like to stray away from it. If you think otherwise, I'll gladly try it. I think I had a problem like this before and I got past it somehow, but I don't remember how I did it.

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No Boot Loader/ Can't Select OS To Boot, Hangs On Blinking Underscore?

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i have ONE hard drive with partitions. I had a really bad setup first, I had 1 partition with 3 windows installs on it, folders like WINDOWS, WINPRO, WINN, I never took the time to delete them or whatever, and I was using winpro as my main OS. When I was running the above setup, when I boot up it would ask me: Select what OS to load Windows Pro, Windows Home, Windows Home

I decieded to install Windows 7 Ultimate 64 bit, worked flawlessy, but I wanted to go back to windows xp pro 64 bit. So I made a new partition and installed windows XP pro 64 bit onto it. when I tried installing windows xp with my CD, the first part would work fine, but then when it restarted to continue the setup, it would load my MOBO logo and then after, it would just show a blinking underscore "_" on the top left corner, and nothing else.

I managed to install a fresh windows xp from my USB flash drive, but when booting up normally it still does not let me select what OS to log on to, it just shows the blinking underscore in the top left after the MOBO logo passes, I actually have to boot by USB drive to boot this fresh install of windows. I think something is wrong with my boot loader, but have no idea how to fix it.

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The unit has an HP mainboard 800mhz, a P4 2.6Ghz processor, 300Watt PSU, and all was well until until I actually attached a known good XP HDD to the otherwise completed system. It failed to boot, resulting in only a flashing underscore after the HP/P4 boot screen, no beeps. Same thing happens if I try to boot from an XP CD

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Nov 8, 2009

I left my computer in "suspend", and when I sat again, it was frozen at my BIOS screen. Each time I try to restart it, it goes straight to that screen. I can't even access my BIOS settings (pressing keyboard buttons doesn't work). Nothing changed when I placed my XP disk in the ROM drive.

I'm using an ASUS mobo and AMD processor (sorry, I can't recall the particular models right now). I have not changed any hardware or installed new software recently except anti-virus definitions.

Does this sound like a motherboard or PSU issue?

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Nov 8, 2009

I left my computer in "suspend", and when I sat again, it was frozen at my BIOS screen. Each time I try to restart it, it goes straight to that screen. I can't even access my BIOS settings (pressing keyboard buttons doesn't work). Nothing changed when I placed my XP disk in the ROM drive.

I'm using an ASUS mobo and AMD processor. (Sorry, I can't recall the particular models right now.) I have not changed any hardware or software recently.

Does this sound like a motherboard issue?

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