Keyboard probs.

Hello . Can anyone put me right. I have a samsung laptop with a new installed win 7 64bit operating system. I have just purchased a new keyboard. The original keyboard was a samsung notebook NP_RV510 A09uk but some of the keys are missing. That keyboard worked fine. I could only buy a new keyboard which was described as an RV510. After fitting it in the keyboard did not work properly. As an example if i enter Q key i get zaq. If i enter p i get +p. If i enter a i get zaq etc. Some keys work fine. I have tried to change the keyboard settings by reinstalling the driver, changing the settings in ease of access etc. I have also tried software such as Key Tweak but this did not work! Is there any way to remap the keyboard either by using existing win 7 settings or using a third party software download to rearrange the keys in the right order?
Thank you for your help.

 

Hello plodr. Thank you for the reply. I have tried the onscreen keyboard and that works ok(but a bit slow)! I do not have an external usb keyboard but i have been thinking about getting on. I would find it easier to type with an external usb keyboard that an onscreen version.

 

Hello. You are quite right. I will get a usb keyboard. Thank you for your help.