Instruct: Classify the given Amazon review as either positive or negative.
Query: Does not work

I have a Toshiba Satellite A215 laptop. Toshiba's site says my laptop supports upto 4 GB of DDR2 667 MHz memory. However, when I insert the DIMMs into the laptop, it powers up but does not go any further (i.e. blank screen). This is possibly due to the same reason that others have mentioned, i.e. PNY labels PC2 800 MHz DIMMs as 667 MHz and finicky laptops do not accept this. This may be a great product (or not) but since it doesn't work for me, I'm forced to rate it 1 star (0 stars if that were an option).RMA'd product and am now awaiting the Mushkin Enhanced essentials memory that is compatible with my laptop per the Mushkin memory configurator (excellent tool). Could not find a half-decent memory configurator on the PNY site, unfortunately, else it may have saved me some aggravation. Amazon was awesome with the return process, so no complaints about that.Hopefully the make and model of the laptop helps someone else with their decision about whether to purchase this product.