|Windows XP defaults to Safe Mode at every startup|
You cannot start Windows XP in Safe Mode
How to perform an in-place upgrade (reinstallation) of Windows XP
Safe mode stops booting, you have been getting stop & error messages in normal mode.
Slave your HD to another HD/comp ( no need to bolt it in, just cable it & leave it outside the case ) & copy your stuff ( don't forget your emails & address book ) onto the other HD or other media.
You may have a choice of jumper settings on the master HD, such as master with slave or ms.
Your computer shop should carry. Very cheap.
Notebook / Laptop Hard Drive to Desktop Adapter (2.5" to 3.5")
Run Malwarebytes & SUPERAntiSpyware. Update these programs before running.
Common Issues, Questions, and their Solutions, Frequently Asked Questions.
If it won't run, rename the downloaded mbam-setup.exe file to mb.exe to help work around certain malware that will block it from being run.
If it still will not run.
1: Go to Control Panel > Programs and Features and uninstall Malwarebytes.
Next redownload Malwarebytes but rename it before you download it to your desktop. As you are in the process of downloading when you get to the point that the "enter name of file to save to" box appears, in the "filename" slot, rename mbam-setup.exe to something.exe, then click Save.
If it installed but will not run, navigate to this folder:
2: C:\Programs Files\Malwarebytes' AntiMalware
At the top of the page, Tools > Folder Options > View, click > Show hidden files and folders and untick > Hide extensions for known file types.
How to see hidden files in Windows
Rename all the .exe files in the Malwarebytes' Anti-Malware folder and try to run it again.
When it opens, update 1st.
If it won't update after installing, update manually.
Download & install.
Perform a quick scan or a full system scan on your computer to detect and quarantine/remove the malware found on your PC.