Yes,
First Steps
1st backup your wallets
One thing to try first , is rename the wallet.dat file and let the PC create a new one, if the mint software then works normally, you have too many blocks in your wallet and should use coin control to combine them to less than 200 blocks total. Have seen someone with over 2000 blocks have the kind of issue you are describing. if this worked , try running a mintcoin-qt -salvagewallet command to open the wallet with coins in it.
Ok if it was not the wallet.dat, here is the fun part.
If you had a crash before Run Chkdsk c: /r/f from the CMD Prompt ( it will reboot and check the drive), it will take some time as it will check every sector of the hard drive and repair any problems.
Delete all of your Temp files in
c:\users\%UserName\appdata\local\temp\
&
c:\windows\temp
Open Cmd Prompt with Administrator rights and run
sfc /scannow this makes sure your windows files are ok
Next Copy the Entire Mintcoin Directory C:\Users\"username"\AppData\Roaming\Mintcoin
to the PC from the working PC. (Has to be the same versions to work)
"username" may be different , but that user must have administrator rights
Boot up and open Mint only , no other wallets or software, if it is not active in under 5 minutes , then reboot the PC and hold down the F8 key , enter SAFE MODE with Networking
Only the bare minimum drivers are loaded. Open Mint again and if it works you have a software conflict with another piece of software either a driver or program in startup.
If that is the case you can go to a command prompt and run msconfig and disable stuff in the startup, until you find what it is.
Or you can skip all of that and use another PC or reformat that one.
FYI:
If all of the Above Fails Call a Priest, because that PC needs an exorcism.
Thanks for that I'll give it a whirl