Buttons/timer don't make sound

As copied from the manual.

Setting a silent control panel
When choosing a function, a beep will be heard each time a pad is pressed. If desired, the control can be programmed for silent operation. Press and hold (start/time) . After 7 seconds, the control will beep once. This will block the controls from sounding when a pad is pressed. To return the sound, press and hold (start/time) again for 7 seconds until the control beeps once

NOTE!
The OVEN indicator light on the electronic display will turn ON and OFF when using the Bake feature and during preheat. This is normal and indicates that the oven is cycling to maintain the selected baking temperature. When the preheat indicator light turns OFF, your oven is ready.

The first thing I would do, because it is an "electronic" control panel is to unplug your stove, wait about 30 seconds, then plug it back in. Your Control panel may just need a reset and reboot.
If it is difficult to get to your plug-in, then go to your household breaker-panel box, and flip the switch for your stove to the off position for at least 30 seconds, then switch back to on. ...That's the same as uplugging and plugging back in at the wall.

Hope this helped hun ;-)

First of all, most oven thermometers move very slowly compared to the electronic sensors and controls on the oven. To make sure you are getting an accurate reading, the thermometer should be in the center of the oven, the oven should be preheated, then wait another 20 minutes after the preheat beep. If the temperature is less than 35 degrees higher or lower at this point, it can be adjusted via the controls. Usually on GE ovens you press and hold bake and broil at the same time until SF comes up in the display. Then press bake, then use the arrow keys to raise or lower the temperature setting. If the temperature is more than 35 degrees off, you may have a bad sensor, bad control board, or other problem.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jeffrey_634abadf963e31e5

If it is like my gas oven, press the - button until it beeps, without pressing the function button first. Then press - again and it will change each time. Stop when it makes a noise you like, or just pick the only audible one, which is the default.

http://kitchen.manualsonline.com/manuals/mfg/ge_appliances/xl44.html
Try this link for a manual.I hope this helps ,and good luck.

The model number listed in your problem is a refrigerator.  Go to:
http://www.frigidaire.com/manuals.aspx

and enter the model number of your range/oven unit to find the user manual.  
On my GE range I only have to press and hold the LOCK button for several seconds (until it beeps) to unlock it.

Try unplugging the oven and let sit for 10 min. This will reset the curcuit board and reboot the electronics. You may have to pull out the stove o get to the cord.

You will most likely have to replace the oven igniter. If you have the model number you posted under, I believe the igniter for the broiler is the same as the oven broiler, and could be swapped out to get the oven working again. (of course, now the broiler won't work until that igniter is replaced) If you'd like the part number or any further advise, comment back with the full model number off the sticker just behind the lower drawer panel on the frame of the range. Tonight, you may have to finish the chicken on the stove top.

Check in the manual, sometimes the alarms can be disabled.

Please reply the complete model number to see if that ability exists, or what the P/N is of the timer.

Cold Stove, you may not be able to. The issue here is that oven manufactures put on their units a fast preheat. However it isn't possible to preheat an oven for 7 to 9 minutes and bake short time bake items properly. Also the oven sensor will respond faster than the absorbation rate of the sheet metal in the oven liner. To preheat an oven properly takes 15 to 20 minutes before putting in the food. I see this will a lot of current ovens. Sounds like a normal format of the control.