Mt4 not opening

[mreotrades]

Hi, my Mt4 programme has just stopped working. Its been working perfectly for a few months but for the last week its not been opening up when i use it on my windows XP,  Its just been restarting my PC evwrytime i do. I've tried to download other platforms but no luck it still restarts my whole PC. If theres anyone that can help in why Mt4 is not responding I would be very grateful. 

thanks, 

stay blessed.

Dan.

[yemioke]

try to unistall completely  without any leftover in the registry. then redownload and install again the new version of MT4