Windows explorer keeps crashing...

When i have my volume and network icon there ( It appeared when i ticked the volume box) but Win Explorer reloads and there's no netw/ volume icon. ( specs in sig)
And just to add, i tried upgrading RAM and computer died, got it fixed but has weird start-up. First i hit the on buttom, it turns on then it turns off, then turns on then i have to wait at least 2min before hitting Reset.
Please help
And just to add, i tried upgrading RAM and computer died, got it fixed but has weird start-up. First i hit the on buttom, it turns on then it turns off, then turns on then i have to wait at least 2min before hitting Reset.
Please help
