Windows hangs at loading (XP logo) screen

Help! Windows hangs at loading screen Hi guys, I'm new to this forum and I'm currently having quite a problem.

What happened that resulted in my problem:

1. Computer working totally fine.
2. Attempted to overclock CPU (without much experience)
3. Computer unable to boot
4. Reset CMOS Jumper to reset BIOS back to default.
5. Windows starts up normally, but hangs at the black loading screen where the windows logo is there and there's a little blue bar moving from left to right. Half way loading, the blue bar would just freeze and nothing happens even after many hours.
6. After restarting my computer, it brings me to a black screen asking me to boot safe mode/safe mode with networking/ safe mode with cmd or use last known good settings or start windows normally.
7. Only by selecting Safe mode OR Safe mode with CMD will my computer start. By selecting the others, windows still hangs at the loading screen

Things I have done to try to solve this problem (not in order):
1. Reset CMOS again
2. Replace computer battery
3. Moved around my 2x1GB RAMS and even sometimes just use 1 stick
4. Under safe mode, assessed to msconfig to select diagnostic start-up only.
5. Unplug and plug back hdd.
6. Removed wireless adapter.

Despite doing all these, the problem still continues.