hey
yes we fix imac and issues like you have
becuase this is old model of iMac, Recommended to replace the HDD Drive
Hard drive (HDD) is a hardware part the hold th OS X and Data
This part is damage between 4-7 year and should be replaced
Our Lab in Ramat Gan Center, near to Tel Aviv
give me a call a we can set meeting
0507192019 Hagy
Email:
[email protected]
thanks!
good luck