|After the CMOS is reset, you will have to immediately access the BIOS to correct the date/time & numerous other settings.|
Here's a suggestion - shutdown the system, then temporarily disconnect the HDD & remove the USB card. Connect the keyboard to one of the rear USB ports, do NOT connect a mouse or any other USB devices. Boot the system & immediately begin tapping the BIOS access key (Del, F1, F2, etc) & see what happens.
If it doesn't get you in, shutdown & reconnect everything as it was. Then, rather than reinstalling Windows, try a good old fashioned manual cleanup - delete, uninstall, run a cleaner, MSCONFIG, scan for viruses/malware, defrag, etc. In other words, all the things you should be doing regularly all along.