I would try using it. You'll continue to get errors or bluescreens if the memory is bad. Check the memory specs and see what settings your bios is running for the timings and voltage. Or you can use cpuid (a free download) to check the timings. I stopped using prime 95 years ago; never could get my memory to run perfect with this program. Most memory has at least a one year warranty. If you return it to newegg, for example, they may charge you a 15% restocking fee plus you'll pay shipping one way.