I have a HP Laptop G56-129WM and it starting crashing alot.I did a lot of virus removal/adware.There was a ton of it.So I decided to install Windows 8 and wipe out Windows 7.It seemed to be ok but after I installed Windows 8.It said there were errors that needed to be fixed and that Windows 8 would attempt repairs and then it started crashing and will never boot properly.I could not even boot into safe mode.I gave up and wiped the disk.What can I do now to get my system working again.To reinstall Windows 7 64 bit or Windows 8 64 bit?I checked the BIOS and set up to defaults and did system checks/start up test and they all pass.Now what it displays when I power up is No bootable device--insert boot disk and press any key.What boot disk do I need.I tried putting in the Windows 8 disk that I purchased and will not boot up and I don't have the disks that came with the system.
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