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Everest says my mother board support DDR2/DDR3.I currently have DDR2.Can I remove that and install DDR3?How to know for sure?

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Good start by everyone — a few concise steps to confirm whether your 1545 can accept a different RAM type and what to watch for.

  • Verify the exact machine spec using the laptop service tag or model number (the official spec sheet is the definitive source for supported memory type and maximum capacity).
  • Check the module markings: look for codes like PC2- (DDR2) or PC3- (DDR3) and the speed; that directly tells you which generation the stick is. You can also use a small utility (SPD tab in CPU-Z) if you prefer a software readout.
  • Important hardware facts: DDR2 and DDR3 SODIMMs are physically and electrically different (different pin counts and notch positions, different typical voltages), so they are not interchangeable or mixable. Do not try to force a different-type stick into the slot.
  • If you open the access panel to read the sticker, remove power and battery first, handle modules by the edges, and post a clear photo of the module label plus the service tag if you want help picking the correct replacement.

As noted, a physical check helps; as suggested, the vendor specs are authoritative; and , software scans are useful but should be cross-checked with the label or spec. Post the service tag or a photo and someone here will confirm the exact part to buy.

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You can open the RAM cover at the back of your laptop. Just need to unscrew a few screws and you'll see RAM slot and RAMs attach in it. Check the head and see if it's compatible...

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