I have a Dell Inspiron 1525 laptop running Windows 7. When I attempt to login to my account it hangs at the welcome screen, then the screen goes white and then blue and restarts. I can only use my computer in Safe Mode. I tried Startup Repair, but it did nothing, and I have no System Restore Points. I backed up everything on my computer but I cannot reinstall Windows because my CD Drive doesn't work. Does anybody have any advice? (If it makes a difference, this happened right when I put in a new battery, but the computer doesn't work any differently when I reinsert the old battery).