Hi I have an Acer Aspire 4752. i ahve an acer aspire 4752 and here's what happened. When I power on the laptop, the boot screen shows up with logo(stuks there) and shows the line press <F2> to enter the setup, with the progress bar below, moves up to 75%. When I press F2 or F12, is says waiting.... But the progress bar doesn't go 100%. I tried waiting up to about 30 minutes but there's no luck, the system won't let me go to setup bios or boot menu. Can you suggest me anything I can do?