Open windows search, then type in and search %appdata% then click on the roaming folder and find the folder related to xqn.
Delete everything except your wallet.dat and try reloading the wallet.
I'm pretty tired, not sure if I understand the problem or not. Hope that helps.
Do you have the newest wallet version?
yes i think, all i need is the file called wallet.dat? should i delete the folders aswell or just the filles beside wallet.dat?
if i delete everything and save my wallet.dat and then install the wallet again and putt wallet.dat on the folder will i have the coins anyway?
thank you for your help!
Correct, all you need is the wallet.dat file - that contains your private keys.
1. Backup your wallet.dat to somewhere safe (usb drive or something) - just in case something goes wrong.
2. Close the quotient client.
3. Delete everything in the quotient directory (found as above by going to %appdata% -> roaming) EXCEPT your wallet.dat file.
4. Start quotient again.
5. Thats it. You do not need to replace the wallet.dat file as you left it there to start with.