HELP! Everything APPCRASH

I'm pretty sure now it's a virus or malware.

For the last time, I reformat my hard drive and reinstall my windows. Instead of installing the programs from the source file from my other hard drives, i downloaded the software one by one from the internet. and up until now, there's no appcrash. it seems that the virus or malware infect the .exe so it causes the appcrash..

This thread is getting lots of google hits for AppCrash since before Win7 was released so needs to be updated. But to get more specific help you'd want to start a new thread.

Sounds like a good plan bangades. We call that a diagnostic install.

Follow the steps for a perfect Clean Reinstall - Factory OEM Windows 7,

But after install only install the Network driver to get online, then enable Automatically deliver drivers via Windows Update (Step 3) and do all rounds of Important and Optional Windows Updates.

After each reboot for Updates, test performance long enough to know its okay, then Check for Updates again until all of them are done and no more are offered.

Then do the same with Programs, one by one with testing in between each.

At the point where the problem surfaces, post back a new thread with the culprit you've isolated, System Restore to before it was installed or changed.

Once you have a stable install all set up, save a backup image so you can reimage if it becomes irreparable again. Backup Complete Computer - Create an Image Backup

To test hardware and go over an install after its set up use the Troubleshooting Steps for Windows 7