Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Compatibility Issue

Buyer's beware! Make sure that your system has at least 250 Watts of power supply or even 300 W (as Hercules tech support recommends).My Dell P3 450Mhz only has 200 Watts and the display is jittery when my hard drive is doing something. I tried everything from updating the driver, changing bios settings, flashing my mother board BIOS, etc. Nothing works. My last call to Hercules tech support pretty much told me that my power supply is not strong enough. That's why the display is jittery when the hard drive is working.I bought a new 300 W power supply but my mother board doesn't work at all with it. So I'm returning my board back to Amazon.:^(