my aunt asked me to install Windows Vista Home Premium on her comp.,she had XP and it saysWindows Vista capable.When Installing I selected the Upgrade option instead of doing the clean installation. no problems installing,but afterwards everything is running slow. Ibrought the comp.to my house to use dsl &installed all the the windows updates in hopes that it would solve the slowness. When that was done the computer restarted itself &said it was configuring the updates & then when I came back to check on it Windows Boot Manager was on the screen saying:
"Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:
1.Insert you Windows installation disc and restart your computer.
2. Choose your language settings, and then click NEXT
3. Click REPAIR YOUR COMPUTER
…File: \windows\system32\winload.exe status: 0xc000000f

When i put the vista or the hp reinstall disc in nothing happens. PLEASE help I really dont want to lose everthing. THANKS.
I can’t get past the Windows Boot Manager, I tried pressing F8 to try and get it back to last known good configuration, but pressing F8 doesn’t do anything. I’d be happy if I could just get back to the XP version so she doesn’t lose any of her programs, and then trying to re-install Vista while connected to the internet.

I run a windows XP (SP2) desktop, it is about 2 years old.

Intel(R) Core(TM)2 CPU 4400 @ 2.00GHz

So instead of reinstalling my windows, I used repair which just restores the system. After repair, my pc runs very fast, but after using it for a few days, it starts gradually slowing down until it reaches a point where even typing or moving my mouse is laggy. However, this only happens when im multitasking on my windows. If i end all the big processes (antivirus, downloading programs, MSN, etc.), then my computer runs normal again. Another thing i’d like to mention is when im watching a youtube video and I try to open a program, it lags insanely bad for a short amount of time. When I watch a video, even if its loaded, it still lags. I do not use my PC 24/7 but sometimes I leave it on, for downloads. My CPU usage is not necessarily high when my computer is lagging so its probably not a RAM problem. I also have over 50% of free disk space on all local disks.

My PC does not have any viruses, I use Rogers Online Protection, and i am not experiencing any other difficulties except for multitasking slowdown. I’ve tried many things already, I’ve tried to cancel windows updates, stop using anti-virus, I’ve checked all my running processes (searched them on internet) and they were fine, I’ve recorded all the running processes of when my pc was slow and i’ve checked them after repairing my windows. None of these solutions worked. Is this happening to anybody else? Is my PC too old? Could it be a hidden virus? Should I stop downloading and see what happens? Is this a case of software or hardware?

I don’t want to use my computer without being able to download and use the internet at the same time, or cancel antivirus. And I don’t want to repair it every few weeks/days. I am not a pro at these kind of things, so plzz help!

I don’t know how it happened; one day I got home from work and signed in to a bunch of pages of advertisement being displayed. I tried using Avast, Search and Destroy and 1 Click Maintenance to no avail. Search and Destroy actually deleted something important to the registry and my icons and start button and bar wouldn’t display anymore. I had to load it up in safemode and undo everything it cleaned up, which fixed that problem but the malware still remains.

One thing I did notice is that normally my windows updates are automatic and now it is turned off and I can’t turn it back on again. Another thing is that these are all trial versions of the anti-virus and malware detection/elimination software. I’m at a loss though, usually I can get this cleaned up in a jiffy but this one seems to be serious. System Restore doesn’t have a mark to where I can restore it to an earlier time either.

Any ideas?
I would just wipe it clean but of course I can’t find my XP disk at all.

I do online karaoke. I am trying to use my webcam to do this and everytime I start to use it my internet explorer crashes saying the file that caused the error is quartz.dll. Does anyone know how I can fix this problem? I am using a creative webcam NX and have downloaded all drivers including the new ones directly from creative’s sight. I have also done all necessary windows updates as well. I am perplexed as what the problem can be?

So yea, I did the registry cleaner thing, antivirus scan, and malwarebytes scan, and my computer was rnning great again. However, maybe after a minute or 2, windows tells me that it cannot install anyupdates and click here to solve the problem. At that very moment when i get that message, my whole computer starts to freeze up again. And I know its not a virus or malware. What could be the problem? Should I Just completely turn off windows updates? Best answer for 10 points.