hi there, I'm having some problems with my computer, I would really appreciate if you can help me 
- When I log into windows, the computer takes a while to be completely usable, I mean, sometimes the desktop icons appear after a minute and the HDD led stays on for longer than it should (this happens even after a clean windows installation)
- The optical drive takes ages to read a disc and starts making noises, sometimes it doesn't read discs at all. (I noticed this today)
- I don't know if this is related buy there's an electric/buzzing sound coming from the motherboard (CPU zone) when I use the mouse scroll and also when I'm playing 3D games, it is barely noticeable and I can't even hear it when I'm using a headset but I think I should mention it just in case.
I don't really know what could be causing these problems, maybe the drives are just failing, maybe the motherboard SATAs or maybe the PSU. Is there something I can do to be sure?
Specs:
Processor: AMD FX-6300 3.5 GHz (recently upgraded from Athlon II X2 245)
RAM: Kingston HyperX 1x4GB
Video Card: AMD Radeon HD 6770 1GB
Motherboard: ASUS M5A97 (not R2.0)
HDD: Western Digital Caviar Blue 320GB
PSU: Topower Nano 650w (maybe bad choice)

- When I log into windows, the computer takes a while to be completely usable, I mean, sometimes the desktop icons appear after a minute and the HDD led stays on for longer than it should (this happens even after a clean windows installation)
- The optical drive takes ages to read a disc and starts making noises, sometimes it doesn't read discs at all. (I noticed this today)
- I don't know if this is related buy there's an electric/buzzing sound coming from the motherboard (CPU zone) when I use the mouse scroll and also when I'm playing 3D games, it is barely noticeable and I can't even hear it when I'm using a headset but I think I should mention it just in case.
I don't really know what could be causing these problems, maybe the drives are just failing, maybe the motherboard SATAs or maybe the PSU. Is there something I can do to be sure?
Specs:
Processor: AMD FX-6300 3.5 GHz (recently upgraded from Athlon II X2 245)
RAM: Kingston HyperX 1x4GB
Video Card: AMD Radeon HD 6770 1GB
Motherboard: ASUS M5A97 (not R2.0)
HDD: Western Digital Caviar Blue 320GB
PSU: Topower Nano 650w (maybe bad choice)