First I'd, Remove the laptops battery for a day and then plug the battery back into the laptop and try to boot it up. Have seen this help with failed POST boot conditions before.
If this doesnt help try the following:
If you can not get into the bios config by using the hot key, than it may be a system board issue. If you boot it off of the minimum, without hard drive installed, 1 ram stick only if it has 2 sticks, and it still hangs at the logo its likely a system board issue.
As far as laptops go, the bios's these days are no longer easily reset by removing and reinstalling CMOS battery. They added an extra level of security to laptops that are locked by bios password etc to disallow resetting stolen laptop bios to no password by popping battery out or jumper or push button like desktop computers have. This unfortunately also took away the troubleshooting tool of bios reset! *The stupid part of this bios lock feature is that if someone has stolen a laptop, they can always just pop the hard drive out and have the data anyways in less than 10 minutes unless encrypted.
I have also seen where if you change the parameters of the system you can unhang a bios error, such as adding additional RAM stick or decreasing the RAM count by installing a smaller amount of RAM without removing all RAM count so that the system has to confirm the hardware change and write that information back to flash as the newest configuration so you dont get prompted again about confirming hardware.
