Windows – Laptop is incredibly slow after RAM upgrade

I just upgraded my Windows 7 64 bit laptop to 8 GB of RAM (2x4GB). After installing the RAM it runs outrageously slow. It takes roughly 20 minutes to boot up and is completely unusable after it officially starts up.

I heard that I should mess with the RAM voltage in the BIOS. Unfortunately my BIOS doesn't have any visible settings for this. The BIOS is Insydeh20 and there is no 'advanced' option.

This is the RAM I bought…

http://www.newegg.com/Product/Product.aspx?Item=N82E16820148276

And here is my laptop…

http://www.Amazon.com/Acer-Timeline-AS4810TZ-4508-14-Inch-Aluminum/dp/B002P3KSKW

If I throw in the old RAM it runs just fine.

Any idea what is going on? Bad/incompatible RAM maybe?

UPDATE:

So I tried using one stick of the new RAM by itself and it worked fine.

I then tried using the other stick of the new RAM by itself and it also worked fine.

I even tried putting each one in the other slot, and they still worked fine when there was only one RAM stick installed.

Once I put in 2 RAM sticks it slows to a crawl.

I also tried putting one stick of the new RAM with one stick of the old RAM and it was still slow.

I also did a test with Memtest86 when both the new RAM sticks were installed. It took FOREVER. I'm not sure how long this test is supposed to take but I had to leave it on over night. But when it finally did finish it said there were not any errors.

I have no idea what is going on…

Another update
Turns out I needed to upgrade my bios. Went to the acer webpage, downloaded and installed the latest bios version and now everything seems to be working great. Thanks everyone for their help and suggestions.