I know what you mean, the computer was built way back in 2008 and has lasted a while. However i noticed my GPU may be showing signs of failure( green dots when playing War Thunder, screen flickering, and random blank screens). I do plan on upgrading my rig in the next few months but would like to start with a GPU because i know my current one may be in its last days. My current specs are:
Motherboard: Asus P5QL
CPU: Intel Core2Duo E8400
Video Card: Nvidia Geforce 9800GTX+
RAM: Kingston 4 GB
OS: Windows 7 64 bit
HDD: WD 500GB